C7.1 Engines for Caterpillar Built Machines Caterpillar

Removal Procedure

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Illustration 1	g02029533

1. Cut cable straps (2) from harness assembly (1) .

   Note: Note position of cable straps.

2. Slide the locking tab for connection (3) into the unlocked position.

3. Disconnect harness assembly (1) from connection (3) .

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Illustration 2	g02029535

4. Make temporary marks on heated nozzle connection (6) and the combustion head for the ARD for installation purposes.

5. Remove allen head screw (5) and clamp (4) .

6. Remove heated nozzle connection (6) from the combustion head for the ARD.

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Illustration 3	g02029536

7. Remove O-ring seals (8) and O-ring seal (7) from the heated nozzle.

Installation Procedure

1. Ensure that all components are clean and free from wear and damage. If necessary, replace any components that are worn or damaged.

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Illustration 4	g02029536

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Illustration 5	g02029535

2. Install new O-ring seals (8) and O-ring seal (7) to heated nozzle connection (6) .

3. Position harness assembly (1) and install heated nozzle connection (6) to the combustion head for the ARD.

   Note: Ensure correct orientation of the heated nozzle connection.

4. Install clamp (4) and allen head screw (5) .

5. Use Tooling (A) in order to tighten the allen head screw to a torque of 1.7 N·m (15 lb in).

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Illustration 6	g02029533

6. Connect harness assembly (1) to connection (3) .

7. Slide the locking tab for connection (3) into the locked position.

8. Install new cable straps (2) to harness assembly (1) .

   Note: Ensure that cable straps meet the Original Equipment Manufacturers (OEM) specification.